//load up images to cache
	if (document.images) 
	{ 
		aboutUsHighlight = new Image();
		aboutUsHighlight.src = "../images/nav-1-1-highlight.gif"; 
		aboutUsRegular = new Image(); 
		aboutUsRegular.src = "../images/nav-1-1.gif"; 
		
		servicesHighlight = new Image();
		servicesHighlight.src = "../images/nav-2-1-highlight.gif"; 
		servicesRegular = new Image(); 
		servicesRegular.src = "../images/nav-2-1.gif"; 
		
		feesHighlight = new Image();
		feesHighlight.src = "../images/nav-3-1-highlight.gif"; 
		feesRegular = new Image(); 
		feesRegular.src = "../images/nav-3-1.gif"; 
		
		visitHighlight = new Image();
		visitHighlight.src = "../images/nav-4-1-highlight.gif"; 
		visitRegular = new Image(); 
		visitRegular.src = "../images/nav-4-1.gif"; 
		
		contactHighlight = new Image();
		contactHighlight.src = "../images/nav-5-1-highlight.gif"; 
		contactRegular = new Image(); 
		contactRegular.src = "../images/nav-5-1.gif"; 
	}
	
	function imgHighlight(imgName) 
	{
		if (document.images) 
		{
			document[imgName].src = eval(imgName + "Highlight.src");
		}
	}
	
	function imgRegular(imgName) 
	{
		if (document.images) 
		{			
			document[imgName].src = eval(imgName + "Regular.src");
		}
	}